Shiva Purana
एतस्मान्मातृकादष्टत्रिंशन्मातृसमुद्भवः॥ ईशानाच्छान्त्यतीताख्या कला जाताथ पूरुषात्॥ उत्पद्यते शान्तिकला विद्याऽघोरसमुद्भवा ॥ ५९ ॥
From this mother thirty-eight mothers are born. From the north-east the art called Shantya-atita was born from the Purusha. The art of peace arises from the knowledge of the terrible.
english translation
etasmAnmAtRkAdaSTatriMzanmAtRsamudbhavaH॥ IzAnAcchAntyatItAkhyA kalA jAtAtha pUruSAt॥ utpadyate zAntikalA vidyA'ghorasamudbhavA ॥ 59 ॥
hk transliteration by Sanscript